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Tellmarket scans 0 markets across Kalshi, Polymarket and DraftKings. Fair-value edges open and close through the day — see the live feed. Cross-exchange arbs (both legs locked, riskless) are the rare bonus — every one we’ve caught is logged below, and we never delete one.
Cross-exchange arbs above ~1% net edge are rare events. Most hours show zero. We log every single one we catch — including duplicates from the same market flickering open and closed — and once it’s logged we never delete it. This is the floor of the product, not the ceiling.
Both-legs-locked arbs are genuinely rare. The daily value is the fair-value edges: 0 edges are live right now. See them, or replay a real historical arb in the sandbox.
Pro subscribers get an email and Slack/Discord ping the moment a new arb hits the threshold you set. Most fire in seconds — having the alert first is the difference between catching the edge and missing it.